A unique property of the replicating region of chromosomal DNA.
D002247:Carbon Isotopes; D002498:Centrifugation; D002875:Chromosomes / Q000378:metabolism*; D004269:DNA, Bacterial / Q000032:analysis*; D004926:Escherichia coli / Q000166:cytology* / Q000378:metabolism*; D013936:Thymidine; D014316:Tritium
D002247:Carbon Isotopes; D004269:DNA, Bacterial; D014316:Tritium; D013936:Thymidine